Re: Si570 Set Frequency

Ricardo Caratti
 

Try it:

Where did you see
#define ULIMIT 157000000UL

replace to
#define ULIMIT 440000000UL

The last band starts on 135MHz. You might need to change this value
too on this code:
uint32_t SiBandTable[24] =
{10000000, 11000000, 12000000, 13000000, 15000000, 17000000, 19000000,
21000000, 23000000, 25000000, 28000000, 32000000, 36000000, 41000000,
47000000, 54000000, 61000000, 70000000, 81000000, 90000000,
101000000,
111000000, 128000000, *135000000*};

Try to replace the values of the bands to values of your goal.

73.



On Sun, Apr 14, 2019 at 2:59 PM Alfredo Mendiola Loyola via Groups.Io
<mendiola_loyola=yahoo.com@groups.io> wrote:

Hello:

I have found this Arduino code to set the Frequency on a si570 oscillator
but it has a max frequency of 157 Mhz (#define ULIMIT 157000000UL),

Is there a way to modify the source code to make it work until 440 Mhz ?

I would like to set frequencies from 430 to 440 mhz.

http://pages.suddenlink.net/wa5bdu/Si570_New.ino

Regards
Alfredo Mendiola
OA4AJP



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